Safety shutter-controller for cameras.



W. L. POLLOGK, JR.

SAFETY SHUTTER CONTROLLER FOR CAMERAS.

APPLICATION PiLED SEPT.2.1914.

Eatented Mar. 9, 1915.

nrfarair L. PGLLGCK, an, or new "roan,

snares ensues.

sucrose-commoner. non CAMERAS.

Specification of Letters Patent.

latented Mar. 9, 1915.

Application fi led September 25, 193.4. Serial No. $63,418.

3671' Broadway, New York, N. Y.,) have invented certain new and usefulImprovements in Safety Sl1utter-Controllers for Cameras, of which thefollowing is a full, clear, and exact description.

My invention relates to an improved safetv device for cameras of theso-called Brownie type, wherein the shutter is manually opera ed bypushing a lever to and fro, the movement of the lever in eitherdirection first putting the shutter spring under tension and thenreleasing the shuttor so that it will move under the pressure of thespring. in. such devices the shutter operating handle is exposed and maybe acc'identally moved so as to cause unintentional exposure of thefilm. It is my purpose to provide a simple and eifective means formaking this impossible.

In the drawings Figure 1 is a perspective view of the camera constructedwith my improved safety device, said View being partly broken away. Fig.2 1s a front elevation with the cover at the shutter end removed, partof the camera being broken away. Fig. 3 is a section on the line 3 3,Fig. 2. 42 is a similar view of a modlfication.

1 represents the box of a camera of the.

so-called Erownie type.

2 represents a shutter which is housed in a recess in the front end,said recess being usually covered by a cover pi 'ce 3.

l is a shutter operating l-yenwhmh is pivoted at 5 within the camera,said shutter operating member carrymg a spring 6, which is connectedwith the shutter, and a latch 7 which operates on stops 8-8 at the edgeof the shutter, so that when the handle & is moved the shutter will' beheld stationary while the spring ,6 is being put under tensionythe lastpartial movement of the handle 4: releasin the shutter so that it willbe turned under the tension of the spring 6. A reverse movementof thehandled operates on the shutter in the same way but in a reversedirection. Since the shutter operating handle .4 may be freely moved, itis liable to he accidentally struck and an unintentional exposure made.To prevent this Ihave' provided a safety mechanism, two

forms of which I have shown in my draw ings, In the form illustrated inFigs. 1-3, v

the safety mechanism comprises a swinging latch member 9 pivoted at 10,within the box, and having at its free end a concealed locking nose 11and an exposed finger piece 12, the finger-piece projecting outside ofthe camera box so that the latch may be manually operated. 13 is a stopwhich passes through a slot in the latch and limits its movement. Thenose ll of the latch projects into the path of the swinging move-' mentof the handle l, so that when said handle stands in either of itsextreme positions it cannot be moved until the latch is withdrawn,thatis to say, until the nose 11 is withdrawn from the path of movement ofthe lever l.

In Fig. i I have shown a modification of the latch in which the same,instead of being hinged, is mounted for reciprocal movement being guidedby two studs 13, 13 which pass through a slot in the latch 9 so as toperform the double function of guides and stops to limit the movement.The action, so far as engaging the lever 4, is the same as in that formshown in Figs. 14;, said latch having its inner end ll adapted" to blockthe accidental movement of the shutter operating handle 4. By this verysimple expedient the users of such cameras are 'uaranteed againstaccidental exposure of the photographic plate or sensitized film,

as the case may be.

The several pivots and stops for the safety devlce may be in the form ofscrews whereby the same may be tightened to put I suitable friction onthe safety latch to prevent its accidental displacement. What I claim1s,

1. In a camera of the character described,

a shutter, a shutter operating device arranged to be moved to and froand to operate the shutter on both movements, and

manually operable means carried by th camera to hold said shutteroperating device ate the shutter on both movements, and movement of saidoperating device,- said manually operable means carried by the iatehhaving a swinging movement, said 1 camera to hold said shutter operatingdelatch having an exposed finger piece.

vice a gainsteccidental movement in either T F' L 1AM L POLLOCK JRdirection, sand means comprising amo vable latch located Within thecamera adjacent to Witnesses:

the shutter operating device" and arranged HENDERSON HILL,

to be moved into and out of the path of R. C. MITCHELL.

